Patents Represented by Attorney, Agent or Law Firm Paul W. Busse
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Patent number: 6617136Abstract: Compositions containing a near-IR dye and greater than about 0.5 wt-% of a surfactant selected from the group of a nonionic surfactant, a zwitterionic surfactant, and a mixture thereof, and methods for processing sample materials.Type: GrantFiled: April 24, 2001Date of Patent: September 9, 2003Assignee: 3M Innovative Properties CompanyInventors: Ranjani V. Parthasarathy, Raj Rajagopal, William Bedingham, Michael D. Dirksen, Christopher J. Larson, Vinod P. Menon
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Patent number: 6482638Abstract: Articles, such as high density arrays, on heat-relaxable substrates that can be relaxed by exposure to thermal energy are disclosed, along with methods of manufacturing the arrays, and systems/apparatus for relaxing arrays using electromagnetic energy. The arrays may themselves include electromagnetic energy sensitive material in their construction, in which case exposure of the arrays to suitable electromagnetic energy can provide the thermal energy required to cause the arrays to relax. In other embodiments, the arrays may not include an electromagnetic energy sensitive material in their construction, in which case the arrays may be heated indirectly, i.e., by locating the arrays within a system or apparatus that includes an electromagnetic energy sensitive material and transferring the thermal energy from the electromagnetic energy sensitive material to the array by, e.g., conduction.Type: GrantFiled: November 8, 2000Date of Patent: November 19, 2002Assignee: 3M Innovative Properties CompanyInventors: Sanjay L. Patil, Daniel C. Duan, Kurt J. Halverson, Pierre H. LePere
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Patent number: 6432396Abstract: The present invention provides a method of limiting the presence of a microorganism by contacting the microorganism with polymer-bound metal-containing compositions. The compositions include metal-containing compounds that may be prepared by reacting or polymerizing metal-containing monomers. The microorganism may be present in a liquid that is contacted with the polymer-bound metal-containing composition. Alternatively, the microorganism may be present in a solid that is contacted with the polymer-bound metal-containing composition.Type: GrantFiled: July 6, 2000Date of Patent: August 13, 2002Assignee: 3M Innovative Properties CompanyInventors: Kevin D. Landgrebe, David J. Hastings, Terrance P. Smith, Gregory D. Cuny, Ashok Sengupta, Chandrika D. Mudalige, Frank A. Brandys
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Patent number: 6376619Abstract: High-density, miniaturized arrays including high surface areas. Arrays described include substrate with a coating of linking agents, as well as arrays with reactants affixed to the substrates. Methods of manufacturing high-density arrays of reactants. The methods include the use of oriented, heat shrink films and elastomeric materials. Methods of functionalizing a substrate with linking agents for subsequent affixation of reactants are also disclosed herein.Type: GrantFiled: April 7, 1999Date of Patent: April 23, 2002Assignee: 3M Innovative Properties CompanyInventors: Kurt J. Halverson, Sanjay L. Patil, Jerald K. Rasmussen
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Patent number: 6375871Abstract: A process for preparing a molded article that includes: (a) bringing a moldable material and an open molding tool comprising a molding surface into line contact with each other to imprint a microfluid processing architecture pattern onto the moldable material and thereby form a molded article; and (b) separating the molded article from said molding surface. The invention also features various microfluid processing architecture-bearing, polymeric articles.Type: GrantFiled: June 18, 1998Date of Patent: April 23, 2002Assignee: 3M Innovative Properties CompanyInventors: James G. Bentsen, Raymond P. Johnston, Rolf W. Biernath, Richard J. Poirier
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Patent number: 6251212Abstract: A composite material suitable for labeling a substrate. The composite material, which is preferably a ceramic composite, comprises a fired ceramic body and a layer thereon. The fired ceramic body includes a base layer that comprising a glassy phase and a refractory phase, the glassy phase being capable of wetting a substrate at an application temperature. There is sufficient color contrast between the top layer and the fired ceramic body such that a code pattern (e.g., a bar code) present (or formed) is optically discernible. Methods of making and using the same are also taught.Type: GrantFiled: September 30, 1999Date of Patent: June 26, 2001Assignee: 3M Innovative Properties CompanyInventors: Kyung H. Moh, Daniel Lacave, Bernardus M. Sueoss
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Patent number: 6228134Abstract: Alumina-based abrasive material having at least an internal core structure is provided. Preferably, the abrasive material results from co-extrusion of at least two different sols. In some preferred processing, steps to provide multiple internal core structures are conducted.Type: GrantFiled: April 22, 1998Date of Patent: May 8, 2001Assignee: 3M Innovative Properties CompanyInventor: Dwight D. Erickson
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Patent number: 6217432Abstract: An abrasive article is formed having a barrier coating coextensive with and interposed between a backing and an abrasive coating. The hardened barrier coating essentially eliminates penetration of the abrasive coating into the backing, especially volatile materials. The barrier coating comprising as starting materials a water-borne resin that upon hardening forms a crystalline or semi-crystalline polymer, a major polyfunctional crosslinking agent, and at least one minor polyfunctional crosslinking agent. The minor polyfunctional crosslinking agent enhances the attachment of the abrasive coating to the barrier coating.Type: GrantFiled: May 19, 1998Date of Patent: April 17, 2001Assignee: 3M Innovative Properties CompanyInventor: Edward J. Woo
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Patent number: 6214250Abstract: A composite material suitable for labeling a substrate. The composite material, which is preferably a ceramic composite, comprises a fired ceramic body and a layer thereon. The fired ceramic body includes a base layer that comprising a glassy phase and a refractory phase, the glassy phase being capable of wetting a substrate at an application temperature. There is sufficient color contrast between the top layer and the fired ceramic body such that a code pattern (e.g., a bar code) present (or formed) is optically discernible. Methods of making and using the same are also taught.Type: GrantFiled: September 30, 1999Date of Patent: April 10, 2001Assignee: 3M Innovative Properties CompanyInventors: Kyung H. Moh, Daniel Lacave, Bernardus M. Sueoss
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Patent number: 6197076Abstract: The invention provides a substantially flat coated abrasive article having a fabric-reinforced backing which may include engaging elements such as hooks for releasable attachment to the surface of an abrading apparatus and a method of making the article. The invention also provides an abrading apparatus which includes a back-up pad having releasably attached thereto the abrasive article. The article comprises a substantially flat sheet-like substrate comprised of thermoplastic material and a porous fibrous reinforcing element contained within the substrate and an abrasive layer disposed on a surface of the substrate. The opposite surface of the substrate may include the engaging elements. The article is made by deploying the fabric on a surface, depositing molten thermoplastic polymer over the fabric, removing the substrate from the surface and applying the abrasive layer to one surface of the substrate.Type: GrantFiled: April 5, 1999Date of Patent: March 6, 2001Assignee: 3M Innovative Properties CompanyInventors: Ehrich J. Braunschweig, Donald R. Bell
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Patent number: 6179887Abstract: Reaction injection molding is utilized as a method for making an abrasive article that includes supplying an effective amount of abrasive particles to at least a portion of an abrasive article mold and supplying a binder precursor matrix that includes at least two interactive components to the abrasive article mold. When the binder precursor matrix is cured, the abrasive particles are secured within a binder formed from the binder precursor matrix. An abrasive article includes a plurality of bristles including an increased amount of abrasive particles, wherein a ratio of binder to abrasive particles is at least about 1:3 by weight.Type: GrantFiled: February 17, 1999Date of Patent: January 30, 2001Assignee: 3M Innovative Properties CompanyInventor: Loren L. Barber, Jr.
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Patent number: 6165594Abstract: A composite material suitable for labeling a substrate. The composite material, which is preferably a ceramic composite, comprises a fired ceramic body and a layer thereon. The fired ceramic body includes a base layer that comprising a glassy phase and a refractory phase, the glassy phase being capable of wetting a substrate at an application temperature. There is sufficient color contrast between the top layer and the fired ceramic body such that a code pattern (e.g., a bar code) present (or formed) is optically discernible. Methods of making and using the same are also taught.Type: GrantFiled: January 15, 1998Date of Patent: December 26, 2000Assignee: 3M Innovative Properties CompanyInventors: Kyung H. Moh, Daniel Lacave, Bernardus M. Sueoss
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Patent number: 6165239Abstract: The present invention relates to stable aqueous colloidal dipersions of sulfopolyureas and self supporting films formed from the dispersions which display good mechanical properties from about room temperature to temperatures exceeding 150.degree. C. The films of the invention, which are formed with no volatile organic compound (VOC) emissions and no post-coating chemical or ionic cross-linking, are not redispersible in water and may be used to form heat resistant abrasive articles.Type: GrantFiled: July 28, 1997Date of Patent: December 26, 2000Assignee: 3M Innovative Properties CompanyInventors: Steven T. Hedrick, Howard S. Creel, Subramanian Krishnan, John J. Stofko, Wayne K. Larson
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Patent number: 6159596Abstract: A self mating adhesive fastener element is described. The self mating adhesive fastener element includes a plurality of posts each having a base, an extension, and a nontacky tip. The posts are arranged to provide a self mating pattern and fastener selectivity. An adhesive layer is provided having a first surface and a second surface. The first surface provides a tacky surface between the posts. The second surface provides for adhering the self mating adhesive fastener to a substrate. Additionally disclosed are articles which incorporate the self mating adhesive fastener element and methods for manufacturing and using the self mating adhesive fastener element.Type: GrantFiled: December 23, 1997Date of Patent: December 12, 2000Assignee: 3M Innovative Properties CompanyInventors: Clyde D. Calhoun, Jennifer M. Aamodt
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Patent number: 6155910Abstract: The present invention relates to a method and an article for rapidly polishing a glass workpiece surface using a structured abrasive article including cerium oxide particles dispersed in a binder. The abrasive article for rapid polishing of a glass workpiece comprising a backing and at least one polishing layer. The polishing layer comprises cerium oxide particles dispersed within a binder. The binder provides the attachment means of the at least one polishing layer to the backing. The abrasive article is capable of reducing an initial Rtm of about 0.8 .mu.m or greater on a glass test blank to a final Rtm of about 0.3 .mu.m or less in about one minute using an RPE procedure defined herein. The present invention is also directed to a method of polishing a glass workpiece using the present abrasive article.Type: GrantFiled: September 20, 1999Date of Patent: December 5, 2000Assignee: 3M Innovative Properties CompanyInventors: Craig F. Lamphere, Chong Yong Kim, David A. Kaisaki, Heather K. Kranz, Julia P. Williams
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Patent number: 6129540Abstract: An abrasive article is provided having a sheet-like structure having a major surface having deployed in fixed position thereon a plurality of abrasive three-dimensional abrasive composites, each of the composites comprising abrasive particles dispersed in a binder and having a precise shape defined by a distinct and discernible boundary which includes specific dimensions, wherein the precise shapes are not all identical.Type: GrantFiled: September 29, 1997Date of Patent: October 10, 2000Assignee: Minnesota Mining & Manufacturing CompanyInventors: Timothy L. Hoopman, Nelson D. Sewall
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Patent number: 6080215Abstract: A method for making an abrasive article having at least two abrasive coatings having different abrasive natures. The abrasive natures can differ, for example, by abrasive particle size, abrasive particle type, abrasive particle shape, filler, surfactant, or coupling agent. In another embodiment, the abrasive article can be a structured abrasive article comprising abrasive composites. In another aspect of the invention, the article can have a coating having a single abrasive nature, where the composites comprising the coating are free of abrasive particles.Type: GrantFiled: February 4, 1998Date of Patent: June 27, 2000Assignee: 3M Innovative Properties CompanyInventors: Roy Stubbs, Scott R. Culler, Mara E. Liepa, Donna W. Bange, John D. Haas
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Patent number: 6080216Abstract: Alumina-based abrasive material having at least an internal layer is provided. Preferably, the abrasive material results from co-extrusion of at least two different sols. In some preferred processing, steps to provide multiple internal layers are conducted.Type: GrantFiled: April 22, 1998Date of Patent: June 27, 2000Assignee: 3M Innovative Properties CompanyInventor: Dwight D. Erickson
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Patent number: 6066188Abstract: A coated abrasive backing consisting of an endless, seamless, loop is provided. The backing loop includes about 40-99% by weight of an organic polymeric binder, based upon the weight of the backing; and an effective amount of a fibrous reinforcing material engulfed within the organic polymeric binder material. The endless, seamless backing loop includes a length with parallel side edges, and at least one layer of fibrous reinforcing material engulfed within the organic polymeric binder material such that there are regions of organic binder material free of fibrous reinforcing material on opposite surfaces of the layer of fibrous reinforcing material. The fibrous reinforcing material can be in the form of individual fibrous strands, a fibrous mat structure, or a combination of the these. A method for preparing the endless, seamless backing loop for a coated abrasive belt is also provided.Type: GrantFiled: July 16, 1998Date of Patent: May 23, 2000Assignee: Minnesota Mining and Manufacturing CompanyInventors: Harold Wayne Benedict, Diana Denise Zimny, Donna Wendeln Bange
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Patent number: 6063484Abstract: The present invention provides a microporous material or a membrane in which the membrane includes an azlactone moiety which is blended with or grafted to a thermoplastic polymer to provide a porous material having an internal structure characterized by a multiplicity of spaced, randomly disposed, non-uniform shaped, equiaxed particles of the polyazlactone polymer/thermoplastic polymer blends or the azlactone-graft copolymer. Each of the adjacent particles throughout the material are separated from one another to provide said material with a network of interconnected micropores and each of the particles are connected to each other by a plurality of fibrils. In addition to unmodified azlactone membranes, membranes which have been modified by subsequent reaction of the azlactone moiety with a suitable nucleophile are also included within the scope of the present invention.Type: GrantFiled: December 23, 1997Date of Patent: May 16, 2000Assignee: 3M Innovative Properties CompanyInventors: Bert J. Exsted, Steven L. Kangas